If you tried to sign in with your Microsoft account and you received a message that said: "Your security info change is still pending" or "You can't access this site right now" It's because all the security info (such as alternate contact methods) that you previously added to your account was removed and replaced with new info. You need to wait 30-days for the changes to take effect.

Check the Xbox services, games, and apps for any service outages.

注意: 此内容可帮助你使用工作或学校帐户。 如果在个人Microsoft帐户上遇到验证码问题，请参阅 验证码问题疑难解答。

Learn how to fix a failed delivery message from the postmaster when using Outlook.

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

This cumulative update for Windows Server 2025 (KB5073379), includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained. For information ...

Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.

If you get an email from Microsoft account team and the email address domain is @accountprotection.microsoft.com, it is safe to trust the message and open it. Microsoft uses this domain to send email notifications about your Microsoft account. These notifications can include security codes for two-step verification and account update information, such as password changes. You can check the ...

Uninstall and reinstall Office or Microsoft 365 Use the uninstall troubleshooter to uninstall Microsoft 365, Office 2021, Office 2019, or Office 2016 from your Windows PC. Select the button below to start the uninstall troubleshooter. Uninstall Click Open if you get a pop-up window indicating This site is trying to open Get Help. Follow the prompts on the remaining screens and when prompted ...

Learn how to protect your PC, identity, and data from tech support scams.